import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'

Vue.use(VueRouter)

const routes = [
  {
    path: '/',
    name: 'Login',
    component: Login
  }, {
    path: '/Home',
    name: 'Home',
    component: Home
  },

]

const router = new VueRouter({
  routes
})
// 挂载路由导航守卫
router.beforeEach((to,from,next)=>{
  // to 将要访问的路径
  // from 代表哪个路径跳转而来
  // next 是一个函数 ,表示放行
  //    next()  放行      next('/login') 强制跳转
  if(to.path === '/') return next();
  // 读取数据
  const tokenStr = window.sessionStorage.getItem('token')
  if(!tokenStr) return next('/');
    next()


})


export default router
